WO2013077647A1 - Rf electrode body for ablating unwanted heart tissue - Google Patents

Rf electrode body for ablating unwanted heart tissue Download PDF

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WO2013077647A1
WO2013077647A1 PCT/KR2012/009935 KR2012009935W WO2013077647A1 WO 2013077647 A1 WO2013077647 A1 WO 2013077647A1 KR 2012009935 W KR2012009935 W KR 2012009935W WO 2013077647 A1 WO2013077647 A1 WO 2013077647A1
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electrode
tip
electrode tip
supply device
ablation
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PCT/KR2012/009935
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French (fr)
Korean (ko)
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구자교
조성윤
김상운
강봉수
이상헌
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유앤아이 주식회사
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00351—Heart
    • A61B2018/00357—Endocardium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—Ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00726—Duty cycle

Definitions

  • the present invention relates to an RF electrode body used for locally ablation of tissues of specific parts of the body using radio frequency (RF).
  • RF radio frequency
  • the present invention is derived from a study performed as part of a health research and development project of the Ministry of Health and Welfare and the Ministry of Health Industry and Development [Task No .: A110285, Task name: Development of a next-generation medical device capable of treating spinal pain without surgery].
  • Another approach for treating the herniated intervertebral disc, yellow ligament hypertrophy, etc. is a non-surgical operation, after inserting the RF electrode body into the internal tissue of the spine, applying RF (Radio Frequency) to generate a plasma to negatively charge unnecessary tissue
  • RF Radio Frequency
  • RF Radio frequency
  • Removing unnecessary tissue in the body by using the RF frequency electrode body can reduce the hospital stay in hospital, significantly reduce the operating cost compared to surgical surgery, and has the advantage of reducing the risk of side effects after surgery.
  • the RF electrode body currently used in the art has a disadvantage in that plasma generation is not uniform, and the amount of generation thereof is not sufficient, so that unnecessary body tissues cannot be removed efficiently during the procedure.
  • the present invention is to solve the above problems of the prior art, by applying a current having a specific duty ratio to the RF electrode body by a pulse width modulation (PWM) method,
  • An object of the present invention is to provide an RF electrode body for ablation in which one plasma is generated in a sufficient amount.
  • a first electrode including a first electrode line and a first electrode tip
  • a second electrode including a second electrode line and a second electrode tip.
  • each of the first electrode line and the second electrode line is connected to a power supply device, and the other end of the first electrode tip and the second electrode tip are connected to each other, and the first electrode tip and the second electrode tip are connected to an insulator.
  • the RF electrode body which is coupled to the power supply device to perform the ablation by electric discharge when power is applied to the first electrode tip and the second electrode tip through the first electrode line and the second electrode line,
  • the power supply includes a pulse width modulation (PWM) signal generating circuit having a duty cycle, and has a frequency of 100 to 400 kHz and a duty ratio of 10 to 1500 W having a duty ratio of 1 to 99%.
  • PWM pulse width modulation
  • RF electrode body for ablation wherein power is supplied to the electrode.
  • the power supplied to the electrode in the power supply may be a duty cycle frequency of 1 ⁇ 10 kHz.
  • a current having a specific duty ratio is applied to the electrode by a pulse width modulation (PWM) method, thereby generating a uniform plasma in a sufficient amount. Therefore, it becomes possible to remove unnecessary body tissue very efficiently.
  • PWM pulse width modulation
  • FIG. 1 illustrates an ablation RF electrode body of the present invention.
  • the ablation RF electrode body 100 of the present invention includes a power supply device 30; A first electrode including a first electrode line 12 and a first electrode tip 14; And a second electrode including a second electrode line 22 and a second electrode tip 24, wherein one ends of the first electrode line 12 and the second electrode line 22 are connected to the power supply device 30, respectively.
  • the first electrode tip 14 and the second electrode tip 24 are connected to the other end, respectively, and the first electrode tip and the second electrode tip are coupled via an insulator 60, and the power supply device.
  • plasma may be formed by electric discharge to ablate unnecessary body tissues.
  • Such a configuration is not particularly limited as a configuration generally employed in the RF electrode body, and may be used without limitation as long as it can implement the features of the present invention described below.
  • RF electrode body of the same type as the RF electrode body 100 shown in FIG. 1 is disclosed in detail in Korean Patent Registration No. 10-0778142.
  • the main feature of the RF electrode body of the present invention resides in the power supply device 30, which is explained by the following description.
  • the power supply device 30 of the present invention shown in FIG. 1 includes a pulse width modulation (PWM) signal generating circuit 32 having a duty cycle (see FIG. 2), and has a frequency of 100 to 400 kHz.
  • PWM pulse width modulation
  • the duty ratio (Duty ratio) is characterized in that the supply of 10 ⁇ 1500 W power of 1 ⁇ 99% to the electrode.
  • the pulse width modulation (PWM) signal generation circuit 32 is not particularly limited, and any known device may be used without limitation as long as it can generate a PWM signal having a duty cycle.
  • FIG. 2A illustrates a case where the duty ratio is 60%
  • FIG. 2B illustrates that the duty ratio is 50%.
  • Limiting the duty ratio to the above range is to supply the current to the electrode in a continuous manner as in the prior art without the pulse width modulation by the PWM (Pulse Width Modulation) signal generation circuit 32 This is because the plasma generation by the discharge of the electric current in the electrode is not uniform and the amount thereof is not sufficient.
  • PWM Pulse Width Modulation
  • the pulse width modulation (PWM) signal generation circuit 32 provides a current having a duty ratio of 1 to 99%, more preferably a duty ratio of 25 to 75%.
  • the current is supplied to the electrode, the plasma is uniformly generated, and the amount is also greatly improved, and thus the ablation effect of unnecessary body tissues is greatly improved.
  • the duty ratio is set to less than 1%, the ablation efficiency is deteriorated. If the duty ratio is greater than 99%, it is difficult to obtain an effect due to pulse width modulation.
  • the frequency should be set to 100 to 400 kHz to expect a uniform and sufficient generation of plasma, and the power supplied must also be supplied in the range of 10 to 1500W to achieve the same effect as described above.
  • the power supplied to the electrode in the power supply 3 is preferably a duty cycle frequency of 1 ⁇ 10 kHz for uniform and sufficient generation of the plasma.
  • RF electrode body 12 first electrode line
  • first electrode tip 22 second electrode line
  • PWM signal generating circuit 40 electrode line protective tube

Abstract

Provided is an RF electrode body which comprises: a power source supply device; a first electrode comprising a first electrode wire and a first electrode tip; and a second electrode comprising a second electrode wire and a second electrode tip. In the RF electrode body: one end of the first electrode wire and the second electrode wire is respectively connected to the power source supply device; the first electrode tip and the second electrode tip are connected respectively at the other end; the first electrode tip and the second electrode tip are coupled by means of an insulator; and ablation takes place due to electric discharge when the power source passes from the power source supply device via the first electrode wire and second electrode wire and is applied to the first electrode tip and second electrode tip. A feature of the ablation RF electrode body is that the power source supply device comprises a circuit for generating a pulse width modulation (PWM) signal having a duty cycle, and the electrodes are supplied with electrical power of between 10 and 1,500 W with a frequency of between 100 and 400 kHz and a duty ratio of between 1 and 99%.

Description

불필요한 신체조직의 어블레이션용 ＲＦ 전극체Rf electrode body for ablation of unnecessary body tissue
본 발명은 RF(Radio Frequency)를 이용하여 체내의 특정 부위의 조직을 국소적으로 어블레이션(ablation)하는 데 사용하는 RF 전극체에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an RF electrode body used for locally ablation of tissues of specific parts of the body using radio frequency (RF).
본 발명은 보건복지부 및 보건산업진흥원의 보건의료연구개발사업의 일환으로 수행한 연구로부터 도출된 것이다[과제고유번호: A110285, 과제명: 수술없이 척추 통증 치료가 가능한 차세대 의료기기 개발]. The present invention is derived from a study performed as part of a health research and development project of the Ministry of Health and Welfare and the Ministry of Health Industry and Development [Task No .: A110285, Task name: Development of a next-generation medical device capable of treating spinal pain without surgery].
추간판 탈출증, 황색인대 비대증 등 척추 관련 질환은 외과적 수술로 치료가 가능하지만, 수술환자의 약 30%는 치료 효과를 얻을 수 없다. 또한, 외과적 수술이 척추 신경 부위의 절제를 수반하기 때문에 수술환자의 5 ~ 10%는 수술 실패 증후군(Failed Back Surgery Syndrome, F.B.S.S)으로 일생 동안 고통 받게 된다. Spine-related diseases, such as intervertebral herniation and enlargement of yellow ligament, can be treated by surgical operation, but about 30% of surgical patients cannot obtain therapeutic effect. In addition, 5-10% of surgical patients suffer from Failed Back Surgery Syndrome (F.B.S.S), because surgical procedures involve the removal of spinal nerves.
상기 추간판 탈출증, 황색인대 비대증 등을 치료하기 위한 다른 접근 방법으로는 비외과적 수술로서 RF 전극체를 척추 내부 조직에 삽입한 후, RF(Radio Frequency)를 인가하여 플라즈마를 발생시킴으로써 불필요한 조직을 음전하를 가진 전자와 양전하를 띤 이온으로 분리된 기체상태로 제거(ablation)시키는 방법이 있다. Another approach for treating the herniated intervertebral disc, yellow ligament hypertrophy, etc. is a non-surgical operation, after inserting the RF electrode body into the internal tissue of the spine, applying RF (Radio Frequency) to generate a plasma to negatively charge unnecessary tissue There is a method of ablation in a gaseous state separated by electrons and positively charged ions.
RF(Radio frequency)란 100 ~ 20,000kHz의 주파수 범위를 의미한다. RF 전극을 이용하여 인체 조직을 절제하거나 제거(ablation)하고, 혈관의 노폐물 등을 제거하는 방법은 미국특허 US 6,554,827 B2 등에 개시되어 있다. RF (Radio frequency) means a frequency range of 100 ~ 20,000kHz. A method of ablation or ablation of human tissues using RF electrodes and removal of wastes from blood vessels is disclosed in US Pat. No. 6,554,827 B2 or the like.
RF 주파수 전극체를 이용하여 체내의 불필요한 조직을 제거하는 방법은 외과적 수술법에 비해 병원의 입원기간을 감소시킬 수 있고 수술비용을 현저히 절감할 수 있으며, 수술 후에도 부작용 위험을 줄여주는 장점이 있다. Removing unnecessary tissue in the body by using the RF frequency electrode body can reduce the hospital stay in hospital, significantly reduce the operating cost compared to surgical surgery, and has the advantage of reducing the risk of side effects after surgery.
그러나, 현재 이분야에서 사용되고 있는 RF 전극체는 플라즈마 발생이 균일하지 않으며, 그 발생량도 충분하지 않아서, 시술시 불필요한 신체 조직을 효율적으로 제거하지 못하는 단점을 갖는다.However, the RF electrode body currently used in the art has a disadvantage in that plasma generation is not uniform, and the amount of generation thereof is not sufficient, so that unnecessary body tissues cannot be removed efficiently during the procedure.
본 발명은, 종래 기술의 상기와 같은 문제를 해결하기 위한 것으로서, 펄스 폭 변조(PWM, Pulse Width Modulation) 방식에 의해 특정의 듀티비(Duty ratio)를 갖는 전류를 RF 전극체에 인가함으로써, 균일한 플라즈마가 충분한 양으로 발생되는 어블레이션용 RF 전극체를 제공하는 것을 목적으로 한다. The present invention is to solve the above problems of the prior art, by applying a current having a specific duty ratio to the RF electrode body by a pulse width modulation (PWM) method, An object of the present invention is to provide an RF electrode body for ablation in which one plasma is generated in a sufficient amount.
본 발명은,The present invention,
전원공급장치; 제1전극선과 제1전극팁을 포함하는 제1전극; 및 제2전극선과 2전극팁을 포함하는 제2전극을 포함하며, Power supply; A first electrode including a first electrode line and a first electrode tip; And a second electrode including a second electrode line and a second electrode tip.
상기 제1전극선과 제2전극선의 일단부는 각각 전원공급장치에 연결되며, 타단부에는 각각 제1전극팁과 제2전극팁이 연결되며, 상기 제1전극팁과 제2전극팁은 절연체를 매개하여 결합되며, 상기 전원공급장치로부터 상기 제1전극선과 제2전극선을 통하여 상기 제1전극팁 및 제2전극팁에 전원이 인가되면 전기방전에 의해 어블레이션을 수행하는 RF 전극체에 있어서,One end of each of the first electrode line and the second electrode line is connected to a power supply device, and the other end of the first electrode tip and the second electrode tip are connected to each other, and the first electrode tip and the second electrode tip are connected to an insulator. In the RF electrode body which is coupled to the power supply device to perform the ablation by electric discharge when power is applied to the first electrode tip and the second electrode tip through the first electrode line and the second electrode line,
상기 전원공급장치는 듀티(Duty) 사이클을 갖는 PWM(Pulse Width Modulation) 신호 발생회로를 구비하며, 진동수가 100~400 kHz이고, 듀티비(Duty ratio)가 1~99%인 10~1500 W의 전력을 전극에 공급하는 것을 특징으로 하는 어블레이션용 RF 전극체를 제공한다.The power supply includes a pulse width modulation (PWM) signal generating circuit having a duty cycle, and has a frequency of 100 to 400 kHz and a duty ratio of 10 to 1500 W having a duty ratio of 1 to 99%. Provided is an RF electrode body for ablation, wherein power is supplied to the electrode.
상기 전원공급장치에서 전극에 공급되는 전력은 듀티 사이클 진동수가 1~10 kHz인 것을 사용할 수 있다. The power supplied to the electrode in the power supply may be a duty cycle frequency of 1 ~ 10 kHz.
본 발명의 어블레이션용 RF 전극체는 펄스 폭 변조(PWM, Pulse Width Modulation) 방식에 의해 특정의 듀티비(Duty ratio)를 갖는 전류가 전극에 인가됨으로써, 균일한 플라즈마를 충분한 양으로 발생시킨다. 따라서, 불필요한 신체조직을 매우 효율적으로 제거하는 것을 가능하게 한다.In the ablation RF electrode body of the present invention, a current having a specific duty ratio is applied to the electrode by a pulse width modulation (PWM) method, thereby generating a uniform plasma in a sufficient amount. Therefore, it becomes possible to remove unnecessary body tissue very efficiently.
도 1은 본 발명의 어블레이션용 RF 전극체를 도시한 것이다.1 illustrates an ablation RF electrode body of the present invention.
도 2는 본 발명에 적용되는 듀티비(Duty ratio)를 설명하는 그래프이다.2 is a graph illustrating a duty ratio applied to the present invention.
이하, 첨부된 도면을 참고하여 본 발명의 바람직한 실시예에 대하여 상세히 설명한다. 본 발명을 설명하기에 앞서 관련된 공지기능 및 구성에 대한 구체적 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그에 대한 설명은 생략하기로 한다.Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. Prior to describing the present invention, if it is determined that a detailed description of related known functions and configurations may unnecessarily obscure the subject matter of the present invention, the description thereof will be omitted.
도 1에 도시된 바와 같이, 본 발명의 어블레이션용 RF 전극체(100)는 전원공급장치(30); 제1전극선(12)과 제1전극팁(14)을 포함하는 제1전극; 및 제2전극선(22)과 2전극팁(24)을 포함하는 제2전극을 포함하며, 상기 제1전극선(12)과 제2전극선(22)의 일단부는 각각 전원공급장치(30)에 연결되며, 타단부에는 각각 제1전극팁(14)과 제2전극팁(24)이 연결되며, 상기 제1전극팁과 제2전극팁은 절연체(60)를 매개하여 결합되며, 상기 전원공급장치(30)로부터 상기 제1전극선과 제2전극선을 통하여 상기 제1전극팁 및 제2전극팁에 전원이 인가되면 전기방전에 의해 플라즈마가 형성되어 불필요한 신체조직을 어블레이션시킬 수 있다.As shown in FIG. 1, the ablation RF electrode body 100 of the present invention includes a power supply device 30; A first electrode including a first electrode line 12 and a first electrode tip 14; And a second electrode including a second electrode line 22 and a second electrode tip 24, wherein one ends of the first electrode line 12 and the second electrode line 22 are connected to the power supply device 30, respectively. The first electrode tip 14 and the second electrode tip 24 are connected to the other end, respectively, and the first electrode tip and the second electrode tip are coupled via an insulator 60, and the power supply device. When power is applied from the 30 to the first electrode tip and the second electrode tip through the first electrode line and the second electrode line, plasma may be formed by electric discharge to ablate unnecessary body tissues.
상기와 같은 구성은 RF 전극체에 일반적으로 채용되는 구성으로서 특별히 제한되는 것이 아니며, 하기에 기재되는 본 발명의 특징을 구현할 수 있는 형태라면 제한 없이 사용될 수 있다. 상기 도 1에 도시된 RF 전극체(100)와 동일한 형태의 RF 전극체는 한국특허등록 제10-0778142호에 상세히 개시되어 있다.Such a configuration is not particularly limited as a configuration generally employed in the RF electrode body, and may be used without limitation as long as it can implement the features of the present invention described below. RF electrode body of the same type as the RF electrode body 100 shown in FIG. 1 is disclosed in detail in Korean Patent Registration No. 10-0778142.
본 발명의 RF 전극체의 주된 특징은 전원공급장치(30)에 있으며, 하기의 내용에 의해 설명된다.The main feature of the RF electrode body of the present invention resides in the power supply device 30, which is explained by the following description.
도 1에 도시된 본 발명의 전원공급장치(30)는 듀티(Duty) 사이클(도 2 참조)을 갖는 PWM(Pulse Width Modulation) 신호 발생회로(32)를 구비하며, 진동수가 100~400 kHz이고, 듀티비(Duty ratio)가 1~99%인 10~1500 W의 전력을 전극에 공급하는 것을 특징으로 한다. The power supply device 30 of the present invention shown in FIG. 1 includes a pulse width modulation (PWM) signal generating circuit 32 having a duty cycle (see FIG. 2), and has a frequency of 100 to 400 kHz. In addition, the duty ratio (Duty ratio) is characterized in that the supply of 10 ~ 1500 W power of 1 ~ 99% to the electrode.
상기에서 PWM(Pulse Width Modulation) 신호 발생회로(32)는 특별히 한정되지 않으며, 듀티 사이클을 갖는 PWM 신호를 발생시킬 수 있는 것이라면 공지의 장치가 제한 없이 사용될 수 있다.The pulse width modulation (PWM) signal generation circuit 32 is not particularly limited, and any known device may be used without limitation as long as it can generate a PWM signal having a duty cycle.
상기에서 듀티 사이클 및 듀티비는 도 2에 도시된 그래프에 의하여 쉽게 설명될 수 있다. 즉, 도 2의 (a)는 듀티비가 60%인 경우를 나타내며, (b)는 듀티비가 50%인 것을 나타낸다. The duty cycle and the duty ratio in the above can be easily explained by the graph shown in FIG. That is, FIG. 2A illustrates a case where the duty ratio is 60%, and FIG. 2B illustrates that the duty ratio is 50%.
듀티비를 상기와 같은 범위로 한정하는 것은 PWM(Pulse Width Modulation) 신호 발생회로(32)에 의한 펄스 폭 변조(Pulse Width Modulation) 없이 종래와 같은 컨티뉴어스(continuous) 방식으로 전류를 전극에 공급할 경우, 전극에서 전류의 방전에 의한 플라즈마 발생이 균일하게 이루어지지 않고, 그 양도 충분하지 않기 때문이다.Limiting the duty ratio to the above range is to supply the current to the electrode in a continuous manner as in the prior art without the pulse width modulation by the PWM (Pulse Width Modulation) signal generation circuit 32 This is because the plasma generation by the discharge of the electric current in the electrode is not uniform and the amount thereof is not sufficient.
즉, 본 발명은, PWM(Pulse Width Modulation) 신호 발생회로(32)에 의해 듀티비(Duty ratio)가 1~99%인 전류, 더욱 바람직하게는 듀티비(Duty ratio)가 25~75%인 전류를 전극에 공급하는 경우 플라즈마가 균일하게 발생되며, 그 양도 크게 향상되어 불필요한 신체조직의 어블레이션 효과가 크게 향상됨을 발견하여 완성되었다. 상기에서 듀티비가 1%로 미만으로 설정되면 어블레이션 효율이 저하되는 문제가 발생하고, 99%를 초과하는 경우는 펄스 폭 변조(Pulse Width Modulation)에 의한 효과를 거두기 어렵다.That is, in the present invention, the pulse width modulation (PWM) signal generation circuit 32 provides a current having a duty ratio of 1 to 99%, more preferably a duty ratio of 25 to 75%. When the current is supplied to the electrode, the plasma is uniformly generated, and the amount is also greatly improved, and thus the ablation effect of unnecessary body tissues is greatly improved. If the duty ratio is set to less than 1%, the ablation efficiency is deteriorated. If the duty ratio is greater than 99%, it is difficult to obtain an effect due to pulse width modulation.
본 발명에서 상기 진동수는 100~400 kHz로 설정어야 플라즈마의 균일하고 충분한 발생을 기대할 수 있으며, 공급되는 전력도 10~1500W 범위로 공급되어야 상기와 같은 효과를 거둘 수 있다.In the present invention, the frequency should be set to 100 to 400 kHz to expect a uniform and sufficient generation of plasma, and the power supplied must also be supplied in the range of 10 to 1500W to achieve the same effect as described above.
본 발명에 있어서, 상기 전원공급장치(3)에서 전극에 공급되는 전력은 듀티 사이클 진동수가 1~10 kHz인 것이 플라즈마의 균일하고 충분한 발생을 위해 바람직하다. In the present invention, the power supplied to the electrode in the power supply 3 is preferably a duty cycle frequency of 1 ~ 10 kHz for uniform and sufficient generation of the plasma.
비록 본 발명이 상기 언급된 바람직한 실시예와 관련되어 설명되었지만, 발명의 요지와 범위로부터 벗어남이 없이 다양한 수정이나 변형을 하는 것이 가능하다. 따라서, 첨부된 특허청구범위는 본 발명의 요지에 속하는 한 이러한 수정이나 변형을 포함할 것이다.Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will cover such modifications and variations as long as they fall within the spirit of the invention.
[부호의 설명][Description of the code]
100: RF 전극체 12: 제1전극선100: RF electrode body 12: first electrode line
14: 제1전극팁 22: 제2전극선14: first electrode tip 22: second electrode line
24: 제2전극팁 30: 전원공급장치24: second electrode tip 30: power supply device
32: PWM 신호 발생회로 40: 전극선 보호관32: PWM signal generating circuit 40: electrode line protective tube
50: 전극 방향 조절용 스프링 60: 절연체50: spring for adjusting the electrode direction 60: insulator

Claims (2)

  1. 전원공급장치; 제1전극선과 제1전극팁을 포함하는 제1전극; 및 제2전극선과 2전극팁을 포함하는 제2전극을 포함하며, Power supply; A first electrode including a first electrode line and a first electrode tip; And a second electrode including a second electrode line and a second electrode tip.
    상기 제1전극선과 제2전극선의 일단부는 각각 전원공급장치에 연결되며, 타단부에는 각각 제1전극팁과 제2전극팁이 연결되며, 상기 제1전극팁과 제2전극팁은 절연체를 매개하여 결합되며, 상기 전원공급장치로부터 상기 제1전극선과 제2전극선을 통하여 상기 제1전극팁 및 제2전극팁에 전원이 인가되면 전기방전에 의해 어블레이션을 수행하는 RF 전극체에 있어서,One end of each of the first electrode line and the second electrode line is connected to a power supply device, and the other end of the first electrode tip and the second electrode tip are connected to each other, and the first electrode tip and the second electrode tip are connected to an insulator. In the RF electrode body which is coupled to the power supply device to perform the ablation by electric discharge when power is applied to the first electrode tip and the second electrode tip through the first electrode line and the second electrode line,
    상기 전원공급장치는 듀티(Duty) 사이클을 갖는 PWM(Pulse Width Modulation) 신호 발생회로를 구비하며, 진동수가 100~400 kHz이고, 듀티비(Duty ratio)가 1~99%인 10~1500W의 전력을 전극에 공급하는 것을 특징으로 하는 어블레이션용 RF 전극체.The power supply includes a pulse width modulation (PWM) signal generation circuit having a duty cycle, and has a frequency of 100 to 400 kHz and a power ratio of 10 to 1500 W having a duty ratio of 1 to 99%. Ablation RF electrode body, characterized in that for supplying to the electrode.
  2. 청구항1에 있어서, 상기 전원공급장치에서 전극에 공급되는 전력은 듀티 사이클 진동수가 1~10 kHz인 것을 특징으로 하는 어블레이션용 RF 전극체. The ablation RF electrode body according to claim 1, wherein the power supplied to the electrode in the power supply device has a duty cycle frequency of 1 to 10 kHz.
PCT/KR2012/009935 2011-11-22 2012-11-22 Rf electrode body for ablating unwanted heart tissue WO2013077647A1 (en)

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